Heating assembly and manufacturing method thereof

ABSTRACT

A heating assembly includes: a lower base, an upper part of the lower base being provided with two supporting parts oppositely arranged; a heating element including a heating part and electrode parts, and the heating part is made of a woven mesh, the electrode parts abut against the supporting parts; an oil-guiding cotton abutting against an upper surface of the heating part; and an upper base fastened to the upper part of the lower base to fix the heating element and the oil-guiding cotton. A manufacturing method of a heating assembly is provided, including: providing a lower base; arranging a heating element on an upper part of the lower base; arranging an oil-guiding cotton on an upper surface of the heating element; and fastening an upper base to the lower base, to fix the oil-guiding cotton and the heating element between the upper base and the lower base.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims to the priority of Chinese Patent ApplicationNo. 2021112263830, filed on Oct. 21, 2021, the entire content of whichis incorporated herein by reference.

FIELD

The present disclosure relates to the field of electronic cigarettes, inparticular to a heating assembly and a manufacturing method thereof.

BACKGROUND

At present, as a substitute for tobacco, electronic cigarettes aredeeply loved by smokers. The electronic cigarette mainly includes acartridge and a main body. The cartridge is mounted in an opening of anupper part of the main body. The main body is equipped with a circuitboard, a battery, and a support therein. The battery and the circuitboard are mounted on the support. An upper part of the support isprovided with terminals. The terminals are exposed on an upper surfaceof the main body. The battery is connected to the circuit board, and thecircuit board is connected to the terminals. An atomizing core isdisposed in the cartridge. An upper part of the atomizing core is incommunication with a nozzle through a smoke channel. A bottom of theatomizing core is provided with a spring needle. An upper part of thespring needle is connected to the atomizing core, and a lower part ofthe spring needle is connected to the terminal to achieve an electricalconnection. The battery powers the atomizing core, and the circuit boardcontrols the atomizing core to operate.

The current atomizing core are of two types. One atomizing core is acotton core, which is generally formed by wrapping the oil-guidingcotton around a periphery of a helical heating wire. An outer surface ofthe oil-guiding cotton is soaked in e-liquid in the cartridge. Due tothe limitation of the pitch of the helical heating wire, the distancebetween the adjacent helical turns is relatively large, and a contactpart between the heating wire and the oil-guiding cotton is hot, and thetemperature of a non-contact part between the heating wire and theoil-guiding cotton is low, resulting in uneven temperature inside theoil-guiding cotton and uneven heating of the e-liquid. In addition, anassembly process of this oil-guiding cotton and the heating wire caneasily cause the contact between the oil-guiding cotton and the heatingwire to be loose. In addition, during the assembly process, firstly, theoil-guiding cotton is wrapped on the periphery of the bent heating wire.After wrapping the oil-guiding cotton, the excess oil-guiding cotton atboth ends is cut off. As such, at least half of the length of oneoil-guiding cotton is cut off, and the cut part cannot be reused,resulting in a waste of the oil-guiding cotton.

The other atomizing core is a ceramic core, which is generally acombination of a ceramic and a heating wire. The heating wire issintered on a lower surface of the ceramic, and the heating wire ispartially exposed on the lower surface of the ceramic. An oil inletgroove is provided on an upper surface of the ceramic. This atomizingcore needs to be subject to a sintering process. During the sinteringprocess, firstly, the heating wire is disposed on a lower surface of aceramic prototype, in which the heating wire cannot be completelycovered by the ceramic, but needs to be half buried and half exposed.The ceramic is sintered at a temperature of about 1200 degrees. Theprocess of this one-piece ceramic core seems to be simple, but in fact,the process is difficult to control; and if any element on the ceramiccore is subsequently damaged, the entire ceramic core needs to bereplaced.

SUMMARY

According to various embodiments of the present disclosure, a heatingassembly and a manufacturing method thereof are provided, which have thecharacteristics of simple structure, convenient operation, and strongpracticability.

The present disclosure provides a heating assembly, which includes:

a lower base, an upper part of the lower base being provided with twosupporting parts that are oppositely arranged;

a heating element including a heating part and electrode parts, and theheating part is made of a woven mesh, and the woven mesh includesheating wires arranged in parallel; two ends of each of the heatingwires are connected to the two electrode parts, respectively; theheating wires are connected to each other by fixing wires; the fixingwires are arranged in parallel with the electrode parts, and theelectrode parts are arranged at opposite ends of the heating part; theelectrode parts abut against the supporting parts;

an oil-guiding cotton abutting against an upper surface of the heatingpart; and

an upper base fastened to the upper part of the lower base to fix theheating element and the oil-guiding cotton.

In one of the embodiments, a mesh hole is provided between two adjacentheating wires and between two adjacent fixing wires connected to the twoadjacent heating wires. The oil-guiding cotton is exposed to the meshhole.

In one of the embodiments, the oil-guiding cotton has a hardness, ofwhich the value is listed. The oil-guiding cotton is deformed when beingpressed by an external force, and maintains its original shape whenbeing not pressed by an external force. A silicone sleeve is sleeved onan upper part of the oil-guiding cotton. The silicone sleeve includes atop surface and a side surface. The side surface is bent and extendeddownward from the top surface. The top surface is provided with anoil-passing hole. The oil-guiding cotton is exposed to the oil-passinghole. The side surface is arranged between an inner side of the upperbase and an outer side of the oil-guiding cotton.

In one of the embodiments, the fixing wires are bent upward to extend toform a fixing part. The fixing part is partially inserted into theoil-guiding cotton to fix the oil-guiding cotton.

A manufacturing method of a heating assembly, including:

a), providing a lower base;

b), arranging a heating element on an upper part of the lower base;

c), arranging an oil-guiding cotton on an upper surface of the heatingelement; and

d), arranging an upper base above the oil-guiding cotton, moving theupper base downward or moving the lower base upward, and the upper baseis fastened to the lower base, to fix the oil-guiding cotton and theheating element between the upper base and the lower base.

In one of the embodiments, in step a), the upper part of the lower baseis provided with two supporting parts that are oppositely arranged. Thetwo supporting parts are located at a same height. In step b), theheating element includes a heating part and electrode parts. The heatingpart is made of a woven mesh. The woven mesh includes heating wiresarranged in parallel. Two ends of each of the heating wires areconnected to the two electrode parts, respectively. The heating wiresare connected to each other by fixing wires. The fixing wires arearranged in parallel with the electrode parts. The electrode parts arearranged at opposite ends of the heating part. The electrode parts arearranged on upper surfaces of the supporting parts.

In one of the embodiments, in step c), the oil-guiding cotton isdeformed when being pressed by an external force, and maintains itsoriginal shape when being not pressed by an external force. The fixingwires are bent upward to extend to form a fixing part. After theoil-guiding cotton is arranged on an upper surface of the heating part,the fixing part is pressed inward, and the fixing part enters theoil-guiding cotton to fix the oil-guiding cotton.

In one of the embodiments, in step c), after the oil-guiding cotton isarranged on the upper surface of the heating part, a silicone sleeve isprovided. The silicone sleeve includes a top surface and a side surface.The side surface is bent and extended downward from the top surface. Thetop surface is provided with an oil-passing hole. The silicone sleeve ismounted on an upper part of the oil-guiding cotton, and the oil-guidingcotton is exposed to the oil-passing hole. The side surface covers anouter side surface of the oil-guiding cotton.

In one of the embodiments, in step d), the upper base is fastened to thelower base, and an inner side of the upper base presses the top surfaceand the side surface. The top surface presses the oil-guiding cotton topress the oil-guiding cotton downward and a lower surface of theoil-guiding cotton is in close contact with the heating element. Theside surface is pressed by the inner side of the upper base and an outerside surface of the oil-guiding cotton, and a sealing between the innerside of the upper base and the oil-guiding cotton is realized.

A manufacturing method of a heating assembly includes:

(1), providing an upper base, and arranging an opening of the upper baseupward;

(2), arranging an oil-guiding cotton in the opening of the upper base;

(3), arranging a heating element on an upper part of the oil-guidingcotton; and

(4), fastening a lower base to the upper base to fix the heating elementand the oil-guiding cotton between the upper base and the lower base.

In one of the embodiments, the manufacturing method further includes:after step (1), providing a silicone sleeve. The silicone sleeveincludes a top surface and a side surface. The side surface is bent andextended downward from the top surface. The top surface is provided withan oil-passing hole. After the silicone sleeve is mounted on the openingof the upper base, the oil-guiding cotton is mounted in the siliconesleeve, and the side surface covers the oil-guiding cotton.

In one of the embodiments, in step (3), the heating element includes aheating part and electrode parts. The heating part is made of a wovenmesh. The woven mesh includes heating wires arranged in parallel. Twoends of each of the heating wires are connected to two electrode parts,respectively. The heating wires are connected to each other by fixingwires. The fixing wires are arranged in parallel with the electrodeparts. The electrode parts are arranged at opposite ends of the heatingpart. The heating part is arranged on an upper surface of theoil-guiding cotton.

In one of the embodiments, an upper part of the lower base is providedwith two supporting parts that are oppositely arranged. The twosupporting parts are located at a same height. When the supporting partsare aligned with the electrode parts, and the upper base is fastened tothe lower base, the electrode parts and the supporting parts are tightlypressed, and the oil-guiding cotton and the heating part are tightlypressed.

The heating assembly of the present disclosure includes: a lower base,an upper part of the lower base being provided with two supporting partsthat are oppositely arranged; a heating element including a heating partand electrode parts, and the heating part is made of a woven mesh, andthe woven mesh includes heating wires arranged in parallel, and two endsof each of the heating wires are connected to the two electrode parts,respectively, the heating wires are connected to each other by fixingwires, and the fixing wires are arranged in parallel with the electrodeparts, the electrode parts are arranged at opposite ends of the heatingpart, the electrode parts abut against the supporting parts; anoil-guiding cotton abutting against an upper surface of the heatingpart; and an upper base fastened to the upper part of the lower base tofix the heating element and the oil-guiding cotton. The heating assemblyhas a simple structure, and adopts the cooperation of the oil-guidingcotton and the woven mesh. The mesh-like structure of the woven meshitself can not only cause the oil-guiding cotton to be in close contactwith the woven mesh, but also can heat the oil-guiding cotton evenly.

In addition, the manufacturing method of the heating assembly accordingto the present disclosure includes: providing a lower base; arranging aheating element on an upper part of the lower base; arranging anoil-guiding cotton on an upper surface of the heating element; andarranging an upper base above the oil-guiding cotton, moving the upperbase downward or moving the lower base upward, and the upper base isfastened to the lower base, to fix the oil-guiding cotton and theheating element between the upper base and the lower base. The assemblybetween the oil-guiding cotton and the heating element is simple. Theoil-guiding cotton is attached to the heating element, and then theupper base and the lower base are fastened to each other to complete theassembly of the heating assembly. The processing procedure is simplifiedand the manufacturing process is simple. Compared with the conventionalceramic process, high temperature sintering is avoided, and thedetermination of the relative position between the heating wires and theceramic is avoided.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to illustrate the embodiments of the present disclosure moreclearly, the accompanying drawings used in the description of theembodiments will be briefly introduced below. Apparently, theaccompanying drawings in the following description are only someembodiments of the present disclosure.

FIG. 1 is a perspective view of a cartridge according to an embodimentof the present disclosure.

FIG. 2 is a perspective exploded view of a cartridge according to thepresent disclosure.

FIG. 3 is a perspective exploded view of a cartridge according to thepresent disclosure from another perspective.

FIG. 4 is a perspective view of a heating element according to thepresent disclosure.

FIG. 5 is a schematic view of a heating element and a lower base withoutbeing assembled together according to the present disclosure.

FIG. 6 is a schematic view of a heating element and a lower base afterbeing assembled together according to the present disclosure.

FIG. 7 is a schematic view of an oil-guiding cotton, a heating element,and a lower base after being assembled together according to the presentdisclosure.

FIG. 8 is a schematic view of a silicone sleeve, an oil-guiding cotton,a heating element, and a lower base after being assembled togetheraccording to the present disclosure.

FIG. 9 is a schematic view of an upper base and a lower base after beingassembled together according to the present disclosure.

FIG. 10 is a partial enlarged view of FIG. 4 according to the presentdisclosure.

FIG. 11 is a schematic view of a cartridge according to the presentdisclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The embodiments of the present disclosure will be clearly and completelydescribed below with reference to the accompanying drawings in theembodiments of the present disclosure. Apparently, the describedembodiments are only a part of the embodiments of the presentdisclosure, rather than all the embodiments.

As shown in FIGS. 1 to 11 , an embodiment of the present disclosureprovides a heating assembly and a manufacturing method thereof. Theheating assembly is assembled in a cartridge. Firstly, the heatingassembly is described. The heating assembly includes a lower base 1. Anupper part of the lower base 1 is provided with two supporting parts 11that are oppositely arranged. The lower base 1 is made of plasticmaterial, and the lower base 1 is further provided with electrodecolumns 12. The electrode columns 12 can be provided separately, or canbe coplanar with the supporting parts 11. The electrode columns 12 canalso play a supporting role.

A heating element 2 includes a heating part 25 and electrode parts 22.The heating part 25 is made of a woven mesh, and the woven mesh includesheating wires 21 arranged in parallel. Two ends of each of the heatingwires 21 are connected to the two electrode parts 22, respectively. Theheating wires 21 are connected to each other by fixing wires 23. Thefixing wires 23 are arranged in parallel with the electrode parts 22,and the electrode parts 22 are arranged at opposite ends of the heatingpart 25. The electrode parts 22 abut against the supporting parts 11.The heating part 25 is a metal woven mesh formed by random weaving ofmetal wires. The metal wires are made of one of gold, silver, copper,tungsten, stainless steel, iron chromium alloys, nickel-chromium alloys,and titanium alloys. In the embodiment of the present disclosure, theheating part 25 adopts the metal woven mesh, which can increase thecontact area with e-liquid, and the e-liquid on an oil-guiding cotton isuniformly atomized, and the atomization area is maximized, and thus asmaller output power can achieve good smoke volume effect, saving energyand reducing consumption.

An oil-guiding cotton 3 abuts against an upper surface of the heatingpart 25. The oil-guiding cotton 3 has a strength. The oil-guiding cotton3 is also called an oil storage cotton. The oil-guiding cotton 3 itselfhas a function of absorbing the e-liquid, and also a function of storingthe e-liquid. Under normal conditions, the oil-guiding cotton 3 can holdthe e-liquid to prevent the e-liquid from falling off from theoil-guiding cotton 3. When the amount of the e-liquid in the oil-guidingcotton 3 decreases, the oil-guiding cotton 3 can also absorb externale-liquid.

An upper base 5 is fastened to the upper part of the lower base 1 to fixthe heating element 2 and the oil-guiding cotton 3. The upper base 5 ismade of plastic material. The upper base 5 and the lower base 1 areconnected by means of engaging. For example, the upper base 5 isprovided with an elastic arm, and the lower base 1 is provided with anengaging hole. When the elastic arm of the upper base 5 enters theengaging hole, the engaging is completed. When a separation is required,the elastic arm is separated from the engaging hole, and the upper base5 is separated from the lower base 1.

A mesh hole 26 is provided between two adjacent heating wires 21 andbetween two adjacent fixing wires 23 connected to the two adjacentheating wires 21. In other words, heating wires 21 arranged in parallel,and are connected between the two electrode parts 22; the fixing wire 23is connected to two adjacent heating wires 21, and the mesh hole 26 isenclosed by two adjacent heating wires 21 and two adjacent fixing wires23. The oil-guiding cotton 3 is exposed to the mesh holes 26, and theoil-guiding cotton 3 can be closely attached to the mesh holes 26,resulting in even heating. In addition, the mesh holes 26 can furtherincrease the flow of air flow. On the one hand, the air flow from theoutside can easily enter the inner side of the mesh holes 26, andexchange heat with the hot air flow at the inner side. On the otherhand, the gas generated after heating can be also easily volatilizedthrough the mesh holes 26. This three-dimensional woven mesh itself isuneven in height, and a contact portion of the woven mesh and theoil-guiding cotton 3 is also uneven. This uneven woven mesh isconvenient for contact stability, and the oil-guiding cotton 3 isprevented from sliding with respect to the woven mesh.

The oil-guiding cotton 3 has a hardness and strength. The oil-guidingcotton 3 is made of polyethylene terephthalate (PET), polyester fiber,high-density cotton 4000#, or the like. The hardness of the oil-guidingcotton 3 is 50A-90A. The oil-guiding cotton 3 is deformed when beingpressed by an external force, and maintains its original shape whenbeing not pressed by an external force. A silicone sleeve 4 is sleevedon an upper part of the oil-guiding cotton 3. The silicone sleeve 4includes a top surface and a side surface. The side surface is bent andextended downward from the top surface. The top surface is provided withan oil-passing hole. The oil-guiding cotton 3 is exposed to theoil-passing hole. The side surface is arranged between an inner side ofthe upper base 5 and an outer side of the oil-guiding cotton 3.

When the fixing wires 23 are steel wires, the fixing wires 23 canstrengthen the fixing and increase the strength of the woven meshitself. The fixing wires 23 of the woven mesh can also be appropriatelyextended. The fixing wires 23 are bent upward to extend to form a fixingpart. The fixing part is partially inserted into the oil-guiding cotton3 to fix the oil-guiding cotton 3, which can prevent the oil-guidingcotton 3 from being separated from the woven mesh, especially when thewoven mesh is easily separated from the oil-guiding cotton 3 due to thethermal expansion principle during the heating process in which thewoven mesh generates heat. Due to the existence of the fixing part, theseparation of the oil-guiding cotton 3 from the woven mesh can beavoided.

A first assembling process of a heating assembly, that is, amanufacturing method of a heating assembly is provided, and includes thefollowing steps.

a), providing a lower base 1;

b), arranging a heating element 2 on an upper part of the lower base 1;

c), arranging an oil-guiding cotton 3 on an upper surface of the heatingelement 2; and

d), arranging an upper base 5 above the oil-guiding cotton 3, moving theupper base 5 downward or moving the lower base 1 upward, and the upperbase 5 is fastened to the lower base 1, to fix the oil-guiding cotton 3and the heating element 2 between the upper base 5 and the lower base 1.

In step a), the upper part of the lower base 1 is provided with twosupporting parts 11 that are oppositely arranged. The two supportingparts 11 are located at the same height. In step b), the heating element2 includes a heating part 25 and electrode parts 22. The heating part 25is made of a woven mesh. The woven mesh includes heating wires 21arranged in parallel. Two ends of each of the heating wires 21 areconnected to the two electrode parts 22, respectively. The heating wires21 are connected to each other by fixing wires 23. The fixing wires 23are arranged in parallel with the electrode parts 22. The electrodeparts 22 are arranged at opposite ends of the heating part 25. Theelectrode parts 22 are arranged on upper surfaces of the supportingparts 11.

In step c), the oil-guiding cotton 3 is deformed when being pressed byan external force, and maintains its original shape when being notpressed by an external force. The fixing wires 23 are bent upward toextend to form a fixing part. After the oil-guiding cotton 3 is arrangedon the upper surface of the heating part 25, the fixing part is pressedinward, and the fixing part enters the oil-guiding cotton 3 to fix theoil-guiding cotton 3.

In step c), after the oil-guiding cotton 3 is arranged on the uppersurface of the heating part 25, a silicone sleeve 4 is provided. Thesilicone sleeve 4 includes a top surface and a side surface. The sidesurface is bent and extended downward from the top surface. The topsurface is provided with an oil-passing hole. The silicone sleeve 4 ismounted on the upper part of the oil-guiding cotton 3, and theoil-guiding cotton 3 is exposed to the oil-passing hole. The sidesurface covers an outer side surface of the oil-guiding cotton 3.

In step d), the upper base 5 is fastened to the lower base 1, and aninner side of the upper base 5 presses the top surface and the sidesurface. The top surface presses the oil-guiding cotton 3 to press theoil-guiding cotton 3 downward and a lower surface of the oil-guidingcotton 3 is in close contact with the heating element 2. The sidesurface is pressed by the inner side of the upper base 5 and the outerside surface of the oil-guiding cotton 3, and the sealing between theinner side of the upper base 5 and the oil-guiding cotton 3 can beachieved. The silicone sleeve 4 may be used. Of course, in otherdesigns, the silicone sleeve 4 may not be used, and the upper base maybe directly fastened to the lower base.

Through the process of the present disclosure, the heating assembly canbe assembled quickly, especially the assembly between the heatingelement and the oil-guiding cotton can be completed quickly, in whichthe oil-guiding cotton can be directly arranged on the surface of theheating element. Compared with the conventional cotton wrapping process,the manufacturing process of the present disclosure is greatlysimplified.

A second assembling process of a heating assembly, that is, amanufacturing method of a heating assembly is as follows, and includes:

(1), providing an upper base 5, and arranging an opening of the upperbase 5 upward;

(2), arranging an oil-guiding cotton 3 in the opening of the upper base5;

(3), arranging a heating element 2 on an upper part of the oil-guidingcotton 3; and

(4), fastening a lower base 1 to the upper base 5 to fix the heatingelement 2 and the oil-guiding cotton 3 between the upper base 5 and thelower base 1.

After step (1), a silicone sleeve 4 is provided. The silicone sleeve 4includes a top surface and a side surface. The side surface is bent andextended downward from the top surface. The top surface is provided withan oil-passing hole. After the silicone sleeve 4 is mounted on theopening of the upper base 5, the oil-guiding cotton 3 is mounted in thesilicone sleeve 4, and the side surface covers the oil-guiding cotton 3.

In step (3), the heating element 2 includes a heating part 25 andelectrode parts 22. The heating part 25 is made of a woven mesh. Thewoven mesh includes wires 21 arranged in parallel. Two ends of each ofthe heating wires 21 are connected to two electrode parts 22,respectively. The heating wires 21 are connected to each other by fixingwires 23. The fixing wires 23 are arranged in parallel with theelectrode parts 22. The electrode parts 22 are arranged at the oppositeends of the heating part 25. The heating part 25 is arranged on an uppersurface of the oil-guiding cotton 3.

An upper part of the lower base 1 is provided with two supporting parts11 that are oppositely arranged. The two supporting parts 11 are locatedat the same height. When the supporting parts 11 are aligned with theelectrode parts 22, and the upper base 5 is fastened to the lower base1, the electrode parts 22 and the supporting parts 11 are tightlypressed, and the oil-guiding cotton 3 and the heating part 25 aretightly pressed.

The second assembling process has the same principle as the firstassembling process, except that the assembling directions are oppositeto each other. That is, the upper base 5, the oil-guiding cotton 3, theheating element 2, and the lower base 1 can be mounted upside down, andthe heating assembly of the present disclosure can also be obtained.

What is claimed is:
 1. A heating assembly, comprising: a lower base, anupper part of the lower base being provided with two supporting partsthat are oppositely arranged; a heating element comprising a heatingpart and electrode parts, and wherein the heating part is made of awoven mesh, and the woven mesh comprises a plurality of heating wiresarranged in parallel; two ends of each of the heating wires areconnected to two electrode parts, respectively; the heating wires areconnected to each other by fixing wires; the fixing wires are arrangedin parallel with the electrode parts, and the electrode parts arearranged at opposite ends of the heating part; the electrode parts abutagainst the supporting parts; an oil-guiding cotton abutting against anupper surface of the heating part; and an upper base fastened to theupper part of the lower base to fix the heating element and theoil-guiding cotton; wherein a mesh hole is provided between two adjacentheating wires and between two adjacent fixing wires connected to the twoadjacent heating wires; and the oil-guiding cotton is exposed to themesh hole; wherein the oil-guiding cotton is made of polyethyleneterephthalate (PET) and polyester fiber material; the oil-guiding cottonis deformed when being pressed by an external force, and maintains itsoriginal shape when being not pressed by an external force; a siliconesleeve is sleeved on an upper part of the oil-guiding cotton; thesilicone sleeve comprises a top surface and a side surface; the sidesurface is bent and extended downward from the top surface; the topsurface is provided with an oil-passing hole; the oil-guiding cotton isexposed to the oil-passing hole; the side surface is arranged between aninner side of the upper base and an outer side of the oil-guidingcotton.
 2. The heating assembly according to claim 1, wherein the fixingwires are bent upward to extend to form a fixing part; the fixing partis partially inserted into the oil-guiding cotton to fix the oil-guidingcotton.
 3. A manufacturing method of a heating assembly, comprising: a),providing a lower base; b), arranging a heating element on an upper partof the lower base; c), arranging an oil-guiding cotton on an uppersurface of the heating element; and d), arranging an upper base abovethe oil-guiding cotton, moving the upper base downward or moving thelower base upward, and the upper base is fastened to the lower base, tofix the oil-guiding cotton and the heating element between the upperbase and the lower base; wherein in step c), after the oil-guidingcotton is arranged on an upper surface of the heating element, asilicone sleeve is provided; the silicone sleeve comprises a top surfaceand a side surface; the side surface is bent and extended downward fromthe top surface; the top surface is provided with an oil-passing hole;the silicone sleeve is mounted on an upper part of the oil-guidingcotton, and the oil-guiding cotton is exposed to the oil-passing hole;and the side surface covers an outer side surface of the oil-guidingcotton.
 4. The manufacturing method according to claim 3, wherein instep a), the upper part of the lower base is provided with twosupporting parts that are oppositely arranged; the two supporting partsare located at a same height; in step b), the heating element comprisesa heating part and electrode parts; the heating part is made of a wovenmesh; the woven mesh comprises a plurality of heating wires arranged inparallel; two ends of each of the heating wires are connected to theelectrode parts, respectively; the heating wires are connected to eachother by fixing wires; the fixing wires are arranged in parallel withthe electrode parts; the electrode parts are arranged at opposite endsof the heating part; the electrode parts are arranged on upper surfacesof the supporting parts.
 5. The manufacturing method according to claim4, wherein in step c), the oil-guiding cotton is deformed when beingpressed by an external force, and maintains its original shape whenbeing not pressed by an external force; the fixing wires are bent upwardto extend to form a fixing part; after the oil-guiding cotton isarranged on an upper surface of the heating part, the fixing part ispressed inward, and the fixing part enters the oil-guiding cotton to fixthe oil-guiding cotton.
 6. The manufacturing method according to claim5, wherein in step d), the upper base is fastened to the lower base, andan inner side of the upper base presses the top surface and the sidesurface; the top surface presses the oil-guiding cotton to press theoil-guiding cotton downward and a lower surface of the oil-guidingcotton is in close contact with the heating element; the side surface ispressed by the inner side of the upper base and the outer side surfaceof the oil-guiding cotton, and a sealing between the inner side of theupper base and the oil-guiding cotton is realized.
 7. A manufacturingmethod of a heating assembly, comprising: (1), providing an upper base,and arranging an opening of the upper base upward; (2), arranging anoil-guiding cotton in the opening of the upper base; (3), arranging aheating element on an upper part of the oil-guiding cotton; and (4),fastening a lower base to the upper base to fix the heating element andthe oil-guiding cotton between the upper base and the lower base;wherein the manufacturing method further comprises: after step (1),providing a silicone sleeve; wherein the silicone sleeve comprises a topsurface and a side surface; the side surface is bent and extendeddownward from the top surface; the top surface is provided with anoil-passing hole; after the silicone sleeve is mounted on the opening ofthe upper base, the oil-guiding cotton is mounted in the siliconesleeve, and the side surface covers the oil-guiding cotton.
 8. Themanufacturing method according to claim 7, wherein in step (3), theheating element comprises a heating part and electrode parts; theheating part is made of a woven mesh; the woven mesh comprises aplurality of heating wires arranged in parallel; two ends of each of theheating wires are connected to two electrode parts, respectively; theheating wires are connected to each other by fixing wires; the fixingwires are arranged in parallel with the electrode parts; the electrodeparts are arranged at opposite ends of the heating part; and the heatingpart is arranged on an upper surface of the oil-guiding cotton.
 9. Themanufacturing method according to claim 8, wherein an upper part of thelower base is provided with two supporting parts that are oppositelyarranged; the two supporting parts are located at a same height; whenthe supporting parts are aligned with the electrode parts, and the upperbase is fastened to the lower base, the electrode parts and thesupporting parts are tightly pressed, and the oil-guiding cotton and theheating part are tightly pressed.